Blind-fastener.



-J. BRADLEY.

BLIND FASTBNER.

APPLICATION nun 11110.22, 1905.

PATENTED JUNE 18, 1907.

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""J Hnv'tlc HfBartLdt Cri UNIT E STATES PATENT rrrcn.

BLIND-FASTENER.

Specification of Letters Patent.

Patented June 18, 1907.

Application filed December 22, 1905. Serial No. 292,944.

To (All whom, it may concern. Be it known that I, JEROME BRADLEY, a l citizen of the United States, residing at Lan- 5 caster, in the county of lVorcester, State of Massachusetts, have invented a certain new j and useful Improvement in BliiideFasteners, l of which the following is a specification, re'fl erence being had therein to the accompanying drawings.

Figure 1 shows my invention complete and l fastened to the window blind. Fig. 2 is a cross section on S, S showing the method by which the pins and plate lock. Fig. 3 is my locking plate A, removed from the blind. Fig. 4 is my clutch pin which is placed in the i side of the building to hold the blind back.

My invention consists of a device for the purpose of fastening a window blind (preferably an outside blind) either open or shut, by 1 means of a locking plate A, shown in Fig. 3 l and the clutch pins X and 7 the former being I best shown in Fig. i and the latter in Fig. 2 of the drawings. I My plate A may be made of any suitable l metal but I prefer a spring metal such as spring steel or brass. The device is fastened by screws or nails underneath the blind as shown in Fig. 1.. The plate A is bent on the lines W and to as shown in Fig. 1 and is held to the blind. by the nails or screws 4 and it. The plate is T shaped with the arms of the T, 22 bent up on the line it, at an angle of 45. The size of this plate depends on the strength desired. The hole I) is cut where the center lines of the arms and body of the T intersect. Through this hole is passed the pin, /r, which is driven far enough into the wood so that its head acts as a support to the plate and prevents the latter from bending downward. It also holds the plate firml y in place and takes up the blow when the blind is violently opened or closed. This pin 7; also may be used to increase or decrease the tension in the plate A at the point I) by driving it in farther or pulling or screwing it out. I The apertures 0, best shown in Fig. 3, are designed to receive and grip the clutch pins l X and y shown in Figs. 2 and a of the drawings and may be round, square, oblong or other form depending on the shape of the pin used though round is preferred, and of any i suitable size.

The aperture or apertures d (as more than 22, on the plate A,

one hole may be used if greater strength is desired) are designed to admit the use of one or more nails or screws so as to fasten the plate A securely to the bottom. of the blind.

The object of bending the ends of the arms is to act as a guide for the PlllSXtQT y which are screwed in the side of the building and the sill of the window respectively. The top of these pins should be an eighth of an inch higher than the under surface of the plate A as shown in Fig. 2 so that when the blind is opened or closed, the plate will strike the pin on the bent up surface of the T arms and as the blind is drawn in or shoved out, the plate will be lifted till the end of the pin passes beneath the plate on line it and snaps down over the head on reaching the aperture 0. This locks the blind tightly and it cannot be moved till the part m of the plate A is raised by inserting the fingers beneath the plate at that point and pressing upward till the clutch pin is released, when it is free to move. The clutch pin 1 which is placed in the sill of the window, is shown in Fig. 2 and consists of a headless screw so that the end may pass freely in and out of the aperture. 0. The pin X is the same except that is must be bent as shown in Fig. i on account of the vertical surface of the side of the building in place of the horizontal sill of the window. No groove in which to insert a screw driver is necessary in the pin X on account of its shape. In place of these screw clutch pins described, headless wire nails may be used though they are not nearly as eil'icicnt. These clutch pins may be made in any shape so as to be adapted to the form of house on which they are to be used.

I claim as my invention,

In blind fasteners, a plateupon a blind, apertured therein to lock with pins upon the sill and wall, and bracing means for said plate so located as to bring said means, the aperture and the locking pin in a line, when the blind is locked, substantially as described.

In testimony whereof I allix my signature in presence of two witnesses.

JEROME BRADLEY.

Witnesses TIMOTHY J. OCoNNon, l'VILLLiM S. FLINT. 

